Plants grown for 55 days in 750-L outdoor sea-tanks filled with unmodified nutrient-replete sub-tidal seawater overlain by shade screens that reduced light transmission by 50%, while other types of shades created low (0.08 W m-2) levels of UVB radiation

-52%

Swanson and Fox (2007)

Plants grown for 55 days in 750-L outdoor sea-tanks filled with unmodified nutrient-replete sub-tidal seawater overlain by shade screens that reduced light transmission by 50%, while other types of shades created high (0.25 W m-2) levels of UVB radiation